21320141142 has 16 divisors (see below), whose sum is σ = 43444816560. Its totient is φ = 6972624672.

The previous prime is 21320141113. The next prime is 21320141179. The reversal of 21320141142 is 24114102312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33521917 + ... + 33522552.

It is an arithmetic number, because the mean of its divisors is an integer number (2715301035).

Almost surely, 2^21320141142 is an apocalyptic number.

21320141142 is an abundant number, since it is smaller than the sum of its proper divisors (22124675418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21320141142 is a wasteful number, since it uses less digits than its factorization.

21320141142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67044527.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21320141142 its reverse (24114102312), we get a palindrome (45434243454).

The spelling of 21320141142 in words is "twenty-one billion, three hundred twenty million, one hundred forty-one thousand, one hundred forty-two".